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Python Regular Expressions in Python Introduction to Regular Expressions Sets

Peter Brandstetter
Peter Brandstetter
7,163 Points
Posted by Peter Brandstetter
Peter Brandstetter
7,163 Points

Using variables for min. or max. length of a match

Hy.

In the task before we were asked to write a code, to find words with min. x letters, where x gets passed as argument to a function. I tried to use the variable like this:

def find_words(count, str):
    return re.findall(r'\w{count, }', str)

What would be the correct way to be able to use the variable?

Thanks

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

You were getting close, but:

  • you might want to use a different parameter name so you don't shadow the "str" function
  • you could use that function to convert the count into a string and concatenate with the rest of the regex
  • don't put a space after the comma in the regex
def find_words(count, string):
    return re.findall(r'\w{' + str(count) + ',}', string)